Create a simple RS232 interface

jalomic

Replace:
LIBS += -L“C:/Qt/qextserialport-1.2win-alpha/build/” -libqextserialportd.a
by this:

LIBS += -L"C:/Qt/qextserialport-1.2win-alpha/build/" -lqextserialport

qt52

In my build folder have 2 files (libqextserialportd.a and qextserialportd.dll) and 2 folder (moc and obj)

qt52

After replace, still the same :(

qt52

I found the build setting on left corner, is it something wrong with my build setting? I did tried 4 difference setting but result still the same.

4.7.0 Debug
4.7.0 Release
Qt 4.7.3 for Desktop - MinGW 4.4 (Qt SDK) Debug
Qt 4.7.3 for Desktop - MinGW 4.4 (Qt SDK) Release

jalomic

Delete LIBS += -L“C:/Qt/qextserialport-1.2win-alpha/build/” -llibqextserialportd.a
and post here output.

qt52

http://imageshack.us/photo/my-images/203/buildn.jpg/
ok, Can you see the image? I think a bit too small for you.

!http://i.imgur.com/0av0q.jpg(Build1)!

jalomic

strange behavior

Recreate project

qt52

Should i put the build folder ( .a and .dll) inside the project folder?

qt52

When i unzip the file and double click the portcomsender.pro project file it prompt out this dialog.

!http://i.imgur.com/H1iY5.jpg(Build2)!

Is it this the issue?

How can i use his .cpp and .h file to create my own project environmental?

sierdzio

You should not use old .user files. Delete this file before opening a copied project.

sierdzio

You can also consider testing the official Qt Playground project: "QtSerialPort":https://qt.gitorious.org/qtplayground/qtserialport.

qt52

Hello Sierdzio,

Thanks for your advice. Ya, in the folder i found this portcomsender.pro.user file. After deleted and open the project file again the dialog never prompt out anymore.

After this will ask for Target setup. I configured:
Desktop - Tick
Create Build Configurations: For Each Qt Version One Debug And One Release
Use Shadow Building - Tick
Click Finish

http://i.imgur.com/fUYLq.jpg
I try compile and there are few error prompt out. The image shows the error message.

emmm...The program look not so complicated but when compile that time is not that easy.

Is it possible to help me to create a sample project so that i can have a reference and easy for me to check where's the error?
This sample tutorial i get it from http://www.instructables.com/id/Control-your-arduino-from-your-PC-with-the-Qt-Gui/step3/Lets-program/

Thank you very much, I will test QtSerialPort later. It's quite interested to have working sample to test. This sample code is not a tutorial i guess it should be least explanation, hopefully i can understand the coding. I have C programming knowledge but lack C++ and this the first time i try windows programming. :)

Let me have a try first ya...Any question i will come back again..

Best Regards,
Qt52

sierdzio

You have got some missing includes - this is still all about LIBS and INCLUDEPATH in .pro file. I know it's hard to get right the first time you try. Maybe if you are new to this all, it would be better to try something using Qt classes only? You can take a look at example of including custom libs in my "QEasyShell":https://github.com/sierdzio/qeasyshell/blob/master/examples/basic/basic.pro project, but I'm using .pri so I'm not sure it will make it easier for you... although it might. Just be sure to read the global.pri in addition to the one I've linked.

harshit_smart

Hey bro ..m a newbie trying exactly the same program from instructables..
In the desktop prompt as mentioned in step 2 for controlling arduino using qt gui... i am getting the following error..please help if you have fixed the isse you were facing..thnx

C:\Qt\qextserialport-1.2win-alpha>C:\Qt\Qt5.3.0\Tools\mingw482_32\bin\mingw32-ma
ke.exe
C:/Qt/Qt5.3.0/Tools/mingw482_32/bin/mingw32-make -f Makefile.Release
mingw32-make[1]: Entering directory 'C:/Qt/qextserialport-1.2win-alpha'
g++ -c -pipe -fno-keep-inline-dllexport -O2 -Wall -Wextra -frtti -fexceptions -m
threads -DUNICODE -D_TTY_WIN_ -DQT_NO_DEBUG -DQT_CORE_LIB -I. -I'../Qt5.3.0/5.3/
mingw482_32/include' -I'../Qt5.3.0/5.3/mingw482_32/include/QtCore' -I'build/moc'
-I'../Qt5.3.0/5.3/mingw482_32/mkspecs/win32-g++' -o build/obj/win_qextserialpor
t.o win_qextserialport.cpp
win_qextserialport.cpp: In member function 'virtual bool Win_QextSerialPort::ope
n(QIODevice::OpenMode)':
win_qextserialport.cpp:187:37: error: 'class QString' has no member named 'toAsc
ii'
Win_Handle=CreateFileA(port.toAscii(), GENERIC_READ|GENERIC_WRITE,
^
win_qextserialport.cpp: At global scope:
win_qextserialport.cpp:431:6: warning: unused parameter 'c' [-Wunused-parameter]

void Win_QextSerialPort::ungetChar(char c) {
^
win_qextserialport.cpp:948:6: warning: unused parameter 'msecs' [-Wunused-parame
ter]
bool Win_QextSerialPort::waitForReadyRead(int msecs)
^
win_qextserialport.cpp: In member function 'void Win_QextSerialPort::monitorComm
Event()':
win_qextserialport.cpp:988:6: warning: suggest explicit braces to avoid ambiguou
s 'else' [-Wparentheses]
if (eventMask & EV_DSR)
^
Makefile.Release:538: recipe for target 'build/obj/win_qextserialport.o' failed
mingw32-make[1]: *** [build/obj/win_qextserialport.o] Error 1
mingw32-make[1]: Leaving directory 'C:/Qt/qextserialport-1.2win-alpha'
Makefile:34: recipe for target 'release' failed
mingw32-make: *** [release] Error 2

C:\Qt\qextserialport-1.2win-alpha>

thanks

Harshit arora

urgent reply needed...

[quote author="qt52" date="1352892591"]Hello Sierdzio,

Thanks for your advice. Ya, in the folder i found this portcomsender.pro.user file. After deleted and open the project file again the dialog never prompt out anymore.

After this will ask for Target setup. I configured:
Desktop - Tick
Create Build Configurations: For Each Qt Version One Debug And One Release
Use Shadow Building - Tick
Click Finish

http://i.imgur.com/fUYLq.jpg
I try compile and there are few error prompt out. The image shows the error message.

emmm...The program look not so complicated but when compile that time is not that easy.

Is it possible to help me to create a sample project so that i can have a reference and easy for me to check where's the error?
This sample tutorial i get it from http://www.instructables.com/id/Control-your-arduino-from-your-PC-with-the-Qt-Gui/step3/Lets-program/

Thank you very much, I will test QtSerialPort later. It's quite interested to have working sample to test. This sample code is not a tutorial i guess it should be least explanation, hopefully i can understand the coding. I have C programming knowledge but lack C++ and this the first time i try windows programming. :)

Let me have a try first ya...Any question i will come back again..

Best Regards,
Qt52

[/quote]

kuzulis

2 harshit_smart,

instead of QextSerialPort you can use the QtSerialPort in your Qt5.3. The QtSerialPort is an part of an official Qt add-on package. To install it (using an official Qt installer) is enough to expand an "Addons" checkbox and to select "SerialPort" component.

harshit_smart

Thanks for awaited reply ...Ill surely try that right now...but will the program work thats given in the 3rd step of instructable for connecting arduino to qt gui???

[quote author="kuzulis" date="1401795947"]2 harshit_smart,

instead of QextSerialPort you can use the QtSerialPort in your Qt5.3. The QtSerialPort is an part of an official Qt add-on package. To install it (using an official Qt installer) is enough to expand an "Addons" checkbox and to select "SerialPort" component. [/quote]

kuzulis

The QtSerialPort has an built-in Terminal example (and others examples). So, you can try it.

PS: I don't know about protocol between Arduino and PC.

harshit_smart

Hi Kuzulis,
The Qt port terminal example i have already tried, that works fine....
What i am trying to do is this instructable and cant really get it through....ghosh.....i never thought it would be too difficult....

http://www.instructables.com/id/Control-your-arduino-from-your-PC-with-the-Qt-Gui/step3/Lets-program/